[  481.330087] netdevsim netdevsim520 eni520np1: renamed from eth1
[  481.430398] netdevsim netdevsim365 eni365np1: renamed from eth0
[  481.778090] Could not find device with ifindex 2000 in netnsfd 11
[  481.778253] Could not find netns with fd: 2000
[  481.778336] Cannot link a netdevsim to itself
[  481.778422] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).